This hopefully fixes "make check" on Solaris, which currently fails
with:
CC common_test.o
CCLD test_common
Undefined first referenced
symbol in file
kc ./.libs/libcommon.a(common.o)
ld: fatal: symbol referencing errors. No output written to test_common
collect2: error: ld returned 1 exit status
#include "plugin.h"
+#if HAVE_LIBKSTAT
+kstat_ctl_t *kc = NULL;
+#endif /* HAVE_LIBKSTAT */
+
void plugin_log (int level, char const *format, ...)
{
char buffer[1024];